An ideal base coat for all types of exterior solid-color stains and paints. This exterior primer provides excellent resistance to extractive bleeding, mildew, and moisture problems and can even be applied to new, shine, mill-glazed lumber. Makes an ideal base coat for all types of solid stains and paints. Recommended for use on new or previously stained surfaces including shingles, decks, plywood, and wood siding. It is also recommended for use on hardboard or fiber cement board. Approximately covers 250 to 350 sq. ft. per gallon on smooth surfaces. Clean up with soap and water.